Window-shade holder



A. R. NELSON AND I. KNOCH.

w|Noow SHADE HOLDER; APPLICATION FILED 1UNE27. I9I7- 1,329,992. PatentedFeb. 3,1920.

BY (zkt,

ANTON R. NELSON AND ISAAC KNOCI-I, OF SUSANVILLE, CALIFORNIA.

WINDOW-SHADE HOLDER.

spammen of tettersratent. r Patented Feng, 192Q Application mea June 27,19177. serial No. 177,272.

T0 allwhom t may concern.' v

Beit known that we, ANTON R. NELSON and ISAAC KNOCH, citizens of theUnited States, residing in Susanville, inthe State of California, haveinvented new and useful Improvements in Vindow-Shade Rollers, of whichthe following is a specification.

The present invention relates to improvements in the rollers of windowshades, the object of the invention being to provide a roller whichshall be simple and inexpensive in construction, noiseless in operation,and dust proof, and which can readily be tted to windows of differentwidths.

In the accompanying drawing, Figure l is a longitudinal sectional viewof the improved roller; F ig. 2 is an enlarged longitudinal sectionalview of a portion thereof; Figs. 3, 4, 5, 6, are transverse sections onthe lines 3 3, 4-4, 5- 5, 646, respectively of Fig. 2; Fig. 7.is'abroken side view of a modified form of the invention; Fig. 8 isa detailYside .view ofV a part used in said modified form. Referring tothedrawing,1indicates the hollow `tube of our improved roller. A greatimprovement 'over prior shade rollers consists in making this lhollowtube of paper, wound helically 1n three or-four plies, asr

may be found desirable, and cemented together. The paper tube has theadvantage of withstanding rough usa-ge in handling and can be dented ormarred without throwing the same out of alinement and is cheaper 'thaneither wood or tin, which are commonly used.

In the ends of said tube are driven, with a tight fit, plugs 2, 3, ofwood, each having a central hole 4 to form a bearing for a metal shaft.Likewise in the mediate portion of the tube there are driven, with atight fit, wooden plugs 5, 6. A metal shaft `7, extends through holes inthe plugs 3 and 6, and has an annular groove 8 formed around its outerterminal portion to fit in the usual rounded hole in the supportingVbracket at the adjacent end of the roller. The above constructionpermits of the length of the roller being readily varied to suit thewidth of a window. For it is only necessary to shorten the roller at theend in which is the plug 3, and also the shaft'7, and to again iit theplug 3 in the end of the roller. The plug 5 has a central bearing forthe inner end of a metal shaft 9, in alinement with the shaft 7, theshaft 9 also extending through the bearing end, as is common with shaderollers, to fit in the usual rectangular recess in the bracket at theother end of the roller. A tube 26 fits losely around the inner ends ofthe shafts Between the plugs 2 and extends a helical spring 10, its endsbeing coiled, one around an inward extension 11, reduced in diameter, ofthe plug 2, and the other around a wooden sleeve l2, pinned, as at 18,to the shaft. 9. The extreme terminal coils of the helical spring arereceived in grooves 14, 15, in the extension 11v andV sleeve 12respectively, while the adjacent coils fit around said extension andsleeve. The spring 10 is not, however, positively secured to saidlextension and sleeve, since it has been found to be suiicicntly securedif coiled around the `in the plug 2 and having a rectangular Outer samewith a fairly tight fit, because any roy tary motion of the plug 2 andthe sleeve 12 relative to the spring, which would tend to wind up thespring, operates by friction to contract the ends of the spring upon theextension and sleeve so that said ends grip said extension and sleevetightly. ment is very advantageous, as tending to .sinjiplicity' andeconomy of construction,

-since it avoids the expenditure of material and labor required forpositively fastening the ends of the spring upon the extension andsleeve. y

Uur invention also comprises an improved. formof locking device forloc-king the roller in any position in which it is brought to rest. rlheplug 5 is formed, near its end next the sleeve 12, with a deepcircumferential groove 16, andk extending longitudinally from saidgroove 16 to the Vother end ofthe plug are diametrically oppositegrooves 17 having metallic linings 18, the depths of said longitudinalgrooves 17 being slightly less than that of the circumferential groove16. In said longitudinal grooves are dogs 19, resembling small, roundnailswith their This arrangepointed ends cutoff. Their heads 2Oarespring, one or the other of said dogs is of the operator controllingthe further up-` Ward movement of the shade, whereuponv one or the otherof said dogs 19 drops and abut'sagainst the shoulder 21, and said rolleris again locked against a movement tending to unwind the spring. Figs. 7and 8 illustrate a modified form of mounting of a roller for'use with aWindow shade Which isV adapted to be given a movement of translation orrotation, leach independently of the other. In' this form of theinvention the shaft 9 is bent up at its outer endA and formed into ahook 25, to which hook and to the' outer end of the shaft 7 can ybeattached cords running around pulleys and carrying counterweights at theopposite sides ofthe Window in the manner explained in our applicationfor Letters Patent ofthe UnitedStates, iiled May 1,

1916, Serial No. 94,627. ,Also in this form of the invention the disk 22has tWo shoulders 21instead of one, and thus serves to lock the roller,Whenit has been brought to rest, against a slow movement in eitherdirection. t f

The yadvantages'of our invention are :n 1. Simplicity and cheapness ofconstruction. -The roller itself is made of paper, and can beproduced inlarge numbers by machinery at a .comparatively small expense.

The plugs are vof Wood driven tightly into4 the roller. Thus it Will beseen that there need be no metal parts except the' shafts, spring,dogs'and disk.

2. The shalt bearings are long, smooth and noiseless. The shade in beingraised or lowered does not make suflicient noise to be heard by a personin the same room.

The rol ervcan operatefor a very long timeV Without care or attention,since it is dust'proof, both ends of the-roller being` plugged and theholes in the plug being filled'rbv the shafts therein.

4. The roller is locked Vand unlockedl very easily, because the dogs arevery 'sensitive in their action, and the dogs have the further advantagethat the ratchet mechanism can be mounted insideV a very small tube.

fThe 4method of fastening the ends of said shoulder of the disk. t Y Y YY, Y

3.111 means for controlling the rotation great economy inV` conthereinVa circumferential groove, and a groove leading longitudinally from saidcircumferential groove to the'end of vthe device nearer to the disk, anda dogy in said latterf groove having a head inthe circunr ferentialgroove, its end remote from said head projecting from the former grooveand adapted to engage said shoulder of the disk.

2.*Gravity mechanism for locking a device rotatable about a shaft.ycomprising a disk secured to the shaft and having a shoulder, a deviceloosely surrounding'the shaft adjacent to said disk and having therein acircumferential groove, and grooves leading longitudinally Afrom saidcircumferential grooveto the end of the 'device nearer to the disk,anddogs in saidV latter grooves *having Yends remote from said headsprojecting from the former `Qrooves and adapted to engage vshaftadjacent to said disk and having heads in the circuinferential groove,their l of a tube around a Vshaft therein, devices surrounding the shaftand attached respectively thereto and to the tube, and a coiled springaroundthe shaft and both devices, said devices having circumferentialgrooves, each terminal coil of the spring Vbeing contracted andreceived. Within one y of said grooves, and the coils adjacent tofsaidter-l Yminal coils surrounding said devices vvith a close it andWithoutjbeing stretched.

4. A shade roller con'iprising .a rigidtube, a stationary" shaftextending longitudinally Within the' tube, and-Woodenbearings-.securedto and Within the tube and fitting snugly around the shaft.

5. A Window shade roller'comprising a tube consisting' of a` pluralityof Ycoaxial paper. helices, the edges of adjacent turns of Veach helixabutting against each other Without overlapping, and cement securing theseveral helices together, bearings in the endsV of the'tube, vand ashaft Vpassing through said bearings.

ANTON R. NELSON.

f VVISAAC 'KNOCH-

